<form action="login" method="post">
	<div class="form-group">
		<label for="username">用户名</label>
		<input type="text" class="form-control" id="username" name="username" placeholder="Username">
	</div>
	<div class="form-group">
		<label for="Password">密码</label>
		<input type="password" class="form-control" id="Password" name="password" placeholder="Password">
	</div>
	<div class="form-group">
		<label for="captcha">验证码</label>
		<input type="text" class="form-control" id="captcha" name="captcha"
			   placeholder="captcha">
		<span><img src="/index/user/code" alt="验证码"></span>
	</div>
	<button type="submit" class="btn btn-default">登录</button>
</form>
